Steam boiler



March 8, 1932. w. A. HAGSTRUM 8 STEAM BOILER Filed May 2, 1930 2Sheets-Sheet 1 March 8, 1932.

W. A. HAGSTRUM STEAM BOILER Filed May 2, 1930 2 Sheets-Sheet 2 PatentedMar. 8,1932

PA ENT o FIcs I WILLIAM HAGsi-RUM, or ZBLANCHEST ER, oHIo, Assrenon.ToPAULINE, HELENE HAGSTBUM, or BLANCHESTER, 01110.

" STEAM IBIOIIIERL Application filed Mark} I The presentinvention isdirected to improvementsin steam'boilers for domesticpur-' poses, but isnot necessarily limited to such V The primary object of theinventionisto provide a device of this character so constructed thatwater in theboiler can be quick- 1y heated to generate steam, the constructionbeing'such that the steam may be maintained for a, considerabletime'without refueling the fire bowl, due to the presence of a chute ormagazine.

[ Another object of the invention is to provide a device of this kindconstructed in such manner that the coal will be heatedby the contentsof the boiler.

iAnother ob'ect of. he invention ,is to pro.-

vide a device of this type wherein a 'downinvention resides in thenovelfeatures of construction,'formation, combination and ar-'ra-ngement of parts to be hereinafter more fully described, claimed andillustrated in the accompanying drawings, in which Fig. 1 is a sideelevation of a steamrboiler embodying the present invention; V

Fig. 2 is a horizontal section through the fire bowl;

Fig. 3 is a central vertical section;

Fig. 4 is a horizontal section through the boiler;

Fig. 5 is atop plan view;

Fig. 6 is a detailed sectional-view of one of the draft plates; and

Fig. 7 is a detail vertical section of the fire bowl. v

Referring to the drawings, 1 designates a base providing an ash pitwhich communicates with. a housing 2, said housing being equipped with ahinged door 3 to permit removal of ashes. The base is formedwith aninturnedfiange 4 and a vertical marginal flanged V The fire bowl 6 hasformedin its wall a 1930. sensin 449,304.;

any determinate'number, said bowlqhaving its lower end formed with anextension 8 adapted to snugly fit'i ntothe opening de-;.; :fined bytheflange 4c in order that the shoulder 9' will restupon the flange 5,thus providing an. annular fresh air chamber and open into the ducts 7near their upper ends, said ports opening into the fire bowl.

In order to prevent coal entering the ports 11 and clogging them as wellas the ducts 7,

bowed guards" 12 are cast with the bowl.

At one point the bowl is provided with a doorway 13 which opens into thechamber 10,

there'b'eing a door 14 for the door way to con- .trolthe admission offresh air into said :-chamber; 1 Additional doors "may be employed forthesame purpose, if desired. I The boiler l6hasits lower-headerl'?restinggupon theupper-end of the the bowl, thus closing the upper endsof the ducts'7, asmore clearly: shown. in,- Figure 3.. of the drawings.

Thclower header17 and the upper header18 .have the respective ends.ofthe fiues 19 fixed therein, there being an axially disposed fuelchute 20 supportedbetween the headers, and

forms in conjunction with the boiler wall,

annular water and steam chamber 21. A

C smoke domei2'2is mounted uponthe-boiler ,16 and is provided with aflared fuel intake- 23 for the introduction of fuel into the chute 20,or which may be termed a fuel magazine. The dome is provided with afplui rality ofopenings24, correspondingin number to' the flues lQ, inorder'that a brush may be' used for cleaning the lines, 'whennecessary,said openings 'bein normally closed door '26is provided by removablelids 25 .A to permit convenient cleaning of the dome.

' 10 with which the lower ends ofthe ducts 7 communicate. Air ports 11are provided v@The fuel'intake is normally closedby a pair 1 ofpivotally mounted segmental Y shaped lids 265-26 capable of swinginglaterally when I opened or closed. Each lid has 'an-"opening 2Ttherein,and cooperative therewith is ,a.

hingedly connected 'draftpl'ate 28'adapted to swing vertlcallyg'conventional form of thermostat 2 9 isas; 4 sociated with the boilerandthe cooperative lever 3 thereof is connected with the plates 28 bychains or the like 31, it being obvious that the temperature of theWater in the boiler will control the swinging of the draft plates 28 inorder to regulate the draft.

Any means, such as a pipe assembly 32 may be employed for replenishingthe charm ber 21 with water, said assembly being connected with thewater service pipe, as customary. V

The fire bowl is formed with a horizontal flange 33 upon which isrotatably received the grate ring 34 having a rod 35 connectedtherewith, which may be connected with a lever in any approved manner topermit agitation of the ring. The ring is provided with lugs 36 whichco-act with lugs carried by the auxiliary ring 38, which rests upon theribs 39 of the rings 34. The ribs support conical head 40 and associatedtherewith is a conical spreader 41 formed with spaced bars to permitashes to pass there through when the grate is shaken.

Steam generated in the boiler is conducted through the nipple 43 to itspoint of use. Obviously a number of such connections may be used.

Smoke from the dome 22 may be conducted therefrom through the nipple.44, to which the usual smoke pipe is connected, not shown.

In operation, coal is, placed in the chute or magazine to assure aplentiful supply of fuel for the fire bowl, and since the products ofcombustion pass through the flues 19 the water in the boiler will beefiectively heated, the heated water and the steam serves to heat thecoal so that it will give off gas, and'the preheated air flowing fromthe ports 11 mixes with the fuel gases and a thorough combustion ofgases is obtained, the combustible gases passing upwardly through theflues to the dome 22, and escapes through the nipple or thimble 44. V

The thermostat will obviously regulate the opening and closing of thedraft plates 28 in order that the proper down draft is assured.

Since the chamber 10 is annular air will be equally distributed to theports 11, and is obviously preheated before entering the combustion areaof the fire bowl.

The fire bowl is provided with a door 45 so that access can be had tothe interior thereof to make repairs or replacements.

What is claimed 1. i A boiler of the class described, comprising ahollow base, a fire bowl mounted thereon and having ducts in its wall,means for admitting fresh air to the ducts, a boiler'section having avertical fuel magazine therein mounted on the fire bowl, a smoke domeupon the boiler section, flues affording communicathe fire bowl, and'agrate construction mounted in the fire bowl.

2. A boiler of the class described, comprising a hollow base having anannular horizontal flange and a vertical flange, a fire bowl having anextension upon its lower end engageable within the confines of thehorizontal flange and forming in conjunction therewith and with thevertical flange an annular air chamber, means for admitting air thereto,said fire bowl having ducts therein and ports connecting the ducts andinterior of the fire bowl, a boiler section mounted upon the fire bowland including a fuel feed magazine and heat conducting flues a-nnularlyspaced therefrom, means for regulating the draft downwardly through themagazine to the fire bowl, the air from said chamber passing throughsaid ducts and ports into the fire bowl, as and for the purpose setforth.

3. A boiler of the class described, comprising a base constituting anash pit, a fire bowl mounted thereon and having a plurality ofvertically disposed ducts therein and ports communicatingtherewitlnguards carried by theinner surface of the fire bowl anddisposed in spaced relation over the inner ends of the ports, means forconducting fresh air into the ducts for discharge from the ports intothe firebowl, and a fire tube boiler section having a vertical fuelmagazine provided centrally therein, mounted on the fire bowl.

In testimony whereof I hereto aflix my signature.

WILLIAM A. HAGSTRUM.

tion between'the dome and fire bowl and passa ing vertically through theboiler section,

means for conductingv air from the ducts into

